SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
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Termen and his Termenvox. Lev Termen (1896-1993), Russian and Soviet engineer, playing his musical invention. This invention, the first electric musical instrument, was also known as the theremin after his later name Leon Theremin. The instrument was based on the heterodyne principle, and was played without touch by moving the hands through the air around the antennae (as shown here). After a period touring and working in Europe and the USA, Termen returned to USSR in 1938, and later invented the first covert listening device. He returned to the USA in 1991, dying at the age of 97. Photographed in Russia on 17 October 1984.
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